Yes we obey the Lord after we are born again.
However, we must obey the Gospel
in order to be born again.
We are able to obey the Gospel, by (power of) the Spirit.
Us doing the activity of obeying, with the help of the Spirit;
The Spirit of grace.
Since you have purified your souls in obeying the truth through the Spirit in sincere love of the brethren, love one another fervently with a pure heart, having been born again, not of corruptible seed but incorruptible, through the word of God which lives and abides forever, 1 Peter 1:22-23
- Since you have purified your souls in obeying the truth through the Spirit...having been born again, not of corruptible seed
The command of the Gospel is Repent.
Repent, in context of the Gospel, means turn to God in submission to Him as Lord.
The way we obey this command to repent, is to confess Jesus Christ as Lord.
For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation. Romans 10:10
- mouth confession is made unto salvation.
JLB