Being under the Law means that your relationship with God is wholly dependent on your obedience to all of it.Being under the law. means being guilty of breaking the law and standing before God as a sinner
Acts 13:39 Through him everyone who believes is set free from every sin, a justification you were not able to obtain under the law of Moses.
Romans 2:12 All who sin apart from the law will also perish apart from the law, and all who sin under the law will be judged by the law.
Romans 3:19 Now we know that whatever the law says, it says to those who are under the law, so that every mouth may be silenced and the whole world held accountable to God.
Romans 6:14-15 For sin shall no longer be your master, because you are not under the law, but under grace. What then? Shall we sin because we are not under the law but under grace? By no means!
1 Corinthians 9:20-21 To the Jews I became like a Jew, to win the Jews. To those under the law I became like one under the law (though I myself am not under the law), so as to win those under the law. To those not having the law I became like one not having the law (though I am not free from God’s law but am under Christ’s law), so as to win those not having the law.
Galatians 3:10 For all who rely on the works of the law are under a curse, as it is written: “Cursed is everyone who does not continue to do everything written in the Book of the Law.”
Galatians 3:23 Before the coming of this faith, we were held in custody under the law, locked up until the faith that was to come would be revealed.
Galatians 4:4-5 But when the set time had fully come, God sent his Son, born of a woman, born under the law, to redeem those under the law, that we might receive adoption to sonship.
Galatians 4:21 Tell me, you who want to be under the law, are you not aware of what the law says?
And, if that all were not convincing, there's the trump card:
Galatians 5:18 But if you are led by the Spirit, you are not under the law.