Because He Himself suffered when He was tempted, He is able to help those who are being tempted.
18. For in that he himself has suffered, etc. Having been tried by our evils, he is ready, he says, to bring us help. The word temptation here means no other thing than experience or probation; and to be able, is to be fit, or inclined, or suitable. CHAPTER 3 Hebrews Chapter 3:1-6 1.
Here the apostle proceeds to assert the incarnation of Christ, as taking upon him not the nature of angels, but the seed of Abraham; and he shows the reason and design of his so doing. I. The incarnation of Christ is asserted (Heb 2:16): Verily he took not upon him the nature of angels, but he took upon him the seed of Abraham. He took part of flesh and blood.
Commenting on Hebrews 2:14-18
Verse 18. For in that he himself, etc. Because he has suffered, he is able to sympathize with sufferers. Being tempted. Or, being tried. The Greek word here used is more general in its meaning than the English word tempted.