one who is able to symphatize

17For this reason he had to be made like his brothers in every way, in order that he might become a merciful and faithful high priest in service to God, and that he might make atonement for[f]the sins of the people. 18Because he himself suffered when he was tempted, he is able to help those who are being tempted. - Heb. 2:17

passion and pleasure vs kindness and love (mercy)

3At one time we too were foolish, disobedient, deceived and enslaved by all kinds of passions and pleasures. We lived in malice and envy, being hated and hating one another. 4But when the kindness and love of God our Savior appeared, 5he saved us, not because of righteous things we had done, but because of his mercy. He saved us through the washing of rebirth and renewal by the Holy Spirit, 6whom he poured out on us generously through Jesus Christ our Savior, 7so that, having been justified by his grace, we might become heirs having the hope of eternal life. - titus 3:3-7

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we cannot earn salvation by our own effort and by doing good things. we are saved because of God's mercy.