Where does the concept of "unconditional love toward others" come from? What tradition or theology does the concept of "unconditional love toward others" derive from, and how is it reconciled with the need of repentance for absolution along with a similar process for brothers and sisters of the faith described in Titus?

Most will probably know a certain candidate thanked his mother for it recently (could indicate Baptist origins), and it was also brought up on the radio today:  http://www.keylife.org/player/works .
I would submit that the numerous times God forgave Israel, the love he expressed to David even after sinning, and ultimately the very fact that a plan of salvation was established from the very beginning, all point to and demonstrate unconditional love
The need of repentance and &quot;process&quot;, assuming you're speaking of Titus 3:4-7, is that plan of salvation in which demonstrated/demonstrates unconditional love.

Isaiah 54:10
Though the mountains be shaken and the hills be removed, yet my unfailing love for you will not be shaken nor my covenant of peace be removed,” says the Lord, who has compassion on you.
Psalms 78:36-38
But then they would flatter him with their mouths, lying to him with their tongues; their hearts were not loyal to him, they were not faithful to his covenant.
Yet he was merciful; he forgave their iniquities and did not destroy them.  Time after time he restrained his anger and did not stir up his full wrath.
Matthew 18:21-22
Then Peter came to Jesus and asked, “Lord, how many times shall I forgive my brother when he sins against me? Up to seven times?”
Jesus answered, “I tell you, not seven times, but seventy-seven times.