Is salvation possible without repentance? No, not according to God's word. Sadly, you would be hard-pressed to find any powerful preaching on repentance in today's visible church, which is why I enjoy reading the works of the Puritans. I have read this sermon by Thomas Watson and think I will read it again. I invite you to read it as well. Here is a sample...
To discover what true repentance is, I shall first show what it is not. There are several deceits of repentance which might occasion that saying of Augustine that `repentance damns many'. He meant a false repentance; a person may delude himself with counterfeit repentance.
1. The first deceit of repentance is legal terror
A man has gone on long in sin. At last God arrests him, shows him what desperate hazard he has run, and he is filled with anguish. Within a while the tempest of conscience is blown over, and he is quiet. Then he concludes that he is a true penitent because he has felt some bitterness in sin. Do not be deceived: this is not repentance. Ahab and Judas had some trouble of mind. It is one thing to be a terrified sinner and another to be a repenting sinner. Sense of guilt is enough to breed terror. Infusion of grace breeds repentance. If pain and trouble were sufficient to repentance, then the damned in hell should be most penitent, for they are most in anguish. Repentance depends upon a change of heart. There may be terror, yet with no change of heart.
continue on here...
"Afresh, precious, precious Jesus, I resign this body to You, for doing or suffering, for living or dying. Will You accept it? Will You use me for Your glory more than heretofore, that You may have some little return for all the benefits You have done to me? Oh, do grant this request; my heart longs for it, my spirit pleads for it; and "if You will, You can." You know the hot temptation of which I am the subject. Bring Your glory out of it, and keep me from the evil, and it shall be well." - Ruth Bryan