Romans 11:6

Overview - Romans 11
God has not cast off all Israel.
Some were elected, though the rest were hardened.
16 There is hope of their conversion.
18 The Gentiles may not exult over them;
26 for there is a promise of their salvation.
33 God's judgments are unsearchable.
Treasury of Scripture Knowledge

Romans 11:6  (King James Version)
And if by grace, then is it no more of works: otherwise grace is no more grace. But if it be of works, then is it no more grace: otherwise work is no more work.

And if
Romans 3:27 Romans 3:28 Romans 4:4 Romans 4:5 Romans 5:20 Romans 5:21 Deuteronomy 9:4-6 ; 1 Corinthians 15:10 ; Galatians 2:21 ; 5:4 Ephesians 2:4-9
2 Timothy 1:9 ; Titus 3:5

otherwise work
That is, it loses its character, or nature,--that of claiming reward as a matter of right.