7:25 What does this teach?

This teaches that Christ, as the high priest of the new covenant, can save completely everyone who comes to God through Him. He lives forever for the purpose of continually making intercession on their behalf with God (CP Ro 8:33-34; Eph 2:18; 1Ti 2:5-6; He 9:24; 10:19-22; 1Jn 2:1).

Believers need never fear that they will be eternally damned if they sin. If they confess their sins they will be forgiven (CP He 4:14-16; 1Jn 1:7-9).

It must always be remembered though, that Christ does not remain an advocate and intercessor for those who refuse to confess and repent of their sin, and who are no longer in fellowship with God (CP He 6:4-6; 10:26-31; 2Pe 2:20-22; 1Jn 1:5-8; 2:3-6; 3:10).