13 When you heard the message of truth, the gospel of your salvation, and when you believed in Him, you were also sealed with the promised Holy Spirit. 14 He is the down payment of our inheritance, for the redemption of the possession, to the praise of His glory.
Down payment in Greek is arrabón (ar-hrab-ohn’) is the regular term in NT times for “earnest-money,” i.e. advance-payment that guarantees the rest will be given. 728 (arrhabṓn) then represents full security backed by the purchaser who supplies sufficient proof they will fulfill the entire pledge (promise). Strong’s number 728
When a person believes in Jesus Christ as Lord and Savior, he is immediately given the Holy Spirit as a down payment, guaranteed by God Himself that the person will spend eternity with Jesus and never have a possibility of losing eternal life that is given to us by the Holy Spirit.
16 The Spirit Himself testifies together with our spirit that we are God’s children
The Holy Spirit bears witness with our spirit (the inner man) that we are saved and have eternal life. The way we know that it is the Spirit of God is because the love of the truth which is found in scripture compels us to live and proclaim it to a world void of it. The Spirit of God drives us to live in the truth and love the things of God.
Therefore, no condemnation now exists for those in Christ Jesus, 2 because the Spirit’s law of life in Christ Jesus has set you free from the law of sin and of death.
The ones who are born again have been freed from the law of sin and of eternal separation (death) from God. Christians will not be condemned because we have passed from death to life through the Holy Spirit who dwells in us and keeps us safe by the power of God as seen in 1 Peter 1:3-5 that says, 3 Praise the God and Father of our Lord Jesus Christ. According to His great mercy, He has given us a new birth into a living hope through the resurrection of Jesus Christ from the dead 4 and into an inheritance that is imperishable, uncorrupted, and unfading, kept in heaven for you. 5 You are being protected by God’s power through faith for a salvation that is ready to be revealed in the last time.
The Greek word for power is dunamis (doo’-nam-is), meaning: might, power, marvelous works.
Dunamis is where we get the English word for dynamite. A dynamite has great power and this power comes from God who has no limit. Who can go against such power and prevail by taking you away from saving faith in Jesus Christ, if He is the One who is holding your faith by His great and mighty power? Only a person who believes that God will not uphold His promise will think that God’s dunamis can be overpowered by a person or spiritual forces of evil in the heavens by stating that a Christian can lose their salvation.
1 Corinthians 11:32
But when we are judged by the Lord, we are disciplined so that we may not be condemned along with the world.
One of the ways we are kept from falling away or committing apostasy is by God disciplining us to stay in His will. This is seen by a human father who sees his son straying from his commands, the father will choose from a variety of punishments to ensure that his son starts to obey him once again. Discipline is a way to keep us safe from physical or spiritual harm. How many times has a child holding his father’s hand when crossing the streets wants to pull away from him? The father holds the child’s hand even tighter and even speaks with an angry voice to put fear so that the child would not let go of his father’s hand because unknown to the child he can be struck by a car and die.
Hebrews 12 deals with God disciplining us to keep us in obedience to His Word and only those who are truly His (born again) receives discipline but not illegitimate children, only those who have the Spirit of the Living God inside of them. If a person claims to be a Christian but never receives God’s discipline, he/she was never saved in the first place and is not a child of God.
4 In struggling against sin, you have not yet resisted to the point of shedding your blood. 5 And you have forgotten the exhortation that addresses you as sons:
My son, do not take the Lord’s discipline lightly
or faint when you are reproved by Him,
6 for the Lord disciplines the one He loves
and punishes every son He receives.
7 Endure suffering as discipline: God is dealing with you as sons. For what son is there that a father does not discipline? 8 But if you are without discipline—which all receive—then you are illegitimate children and not sons. 9 Furthermore, we had natural fathers discipline us, and we respected them. Shouldn’t we submit even more to the Father of spirits and live? 10 For they disciplined us for a short time based on what seemed good to them, but He does it for our benefit, so that we can share His holiness. 11 No discipline seems enjoyable at the time, but painful. Later on, however, it yields the fruit of peace and righteousness to those who have been trained by it.