6 Bible Verses about Adoption, Assurance Of

The Spirit Himself bears witness with our spirit that we are the children of God.

For as many as are led by the Spirit of God, they are the sons of God.

For you have not received the spirit of bondage again to fear, but you have received the Spirit of adoption by which we cry, Abba, Father!

Everyone who has been born of God does not commit sin, because His seed remains in him, and he cannot sin, because he has been born of God. In this the children of God are revealed, and the children of the Devil: everyone not practicing righteousness is not of God, also he who does not love his brother. For this is the message that you have heard from the beginning, that we should love one another;read more.
not as Cain who was of the evil one, and killed his brother. And for what did he kill him? Because his own works were evil, and his brother's things were righteous. Do not marvel, my brothers, if the world hates you. We know that we have passed from death to life, because we love the brothers. He who does not love his brother abides in death. Everyone hating his brother is a murderer. And you know that no murderer has everlasting life abiding in him. By this we have known the love of God, because He laid down His life for us. And we ought to lay down our lives for the brothers. But whoever has this world's goods and sees his brother having need, and shuts up his bowels from him, how does the love of God dwell in him?

My son, do not despise the chastening of Jehovah; nor be weary with His correction;

And you have forgotten the exhortation which speaks to you as to sons, "My son, despise not the chastening of the Lord, nor faint when you are rebuked by Him; for whom the Lord loves He chastens, and He scourges every son whom He receives." If you endure chastening, God deals with you as with sons, for what son is he whom the father does not chasten?read more.
But if you are without chastisement, of which all are partakers, then you are bastards and not sons. Furthermore we have had fathers of our flesh who corrected us, and we gave them reverence. Shall we not much rather be in subjection to the Father of spirits and live? For truly they chastened us for a few days according to their own pleasure, but He for our profit, that we might be partakers of His holiness. Now chastening for the present does not seem to be joyous, but grievous. Nevertheless afterward it yields the peaceable fruit of righteousness to those who are exercised by it.