John 17:3 And this is eternal life, that they know thee the only true God, and Jesus Christ whom thou hast sent.
Our mothers have loved us unconditionally, and in response to this love we have loved them. Our mothers loved us unconditionally, and accepted our tokens of love, even when the bouquet of flowers was made up of goldenrod and ragweed, they would gently teach us the things they really wanted, such as doing our chores without being asked, and listening so that it didn't need to be said a second time. Quietly we learned that if we love them we will keep their commandments, and it was really no surprise, when we learned that this is also what God wanted too. For we have learned that God also loves us with an unconditional love.
That is after all, the substance of perhaps the very first Bible verse we ever learned. John 3:16 For God so loved the world that he gave his only Son, that whoever believes in him should not perish but have eternal life. God's unconditional love manifested itself on earth in His only Son, Jesus Christ, our Lord, who suffered and died for our sins, and we see his love from the cross, as he says for us, and for all people - Father, forgive them.
Jesus didn't die just for the people who deserved it. Jesus didn't die just for the people who repented. Jesus didn't die just for the people who were sorry. Jesus died for the people who never admitted they were sinners, for those who never saw their sins - Jesus even died for the wicked - that's what unconditional love is all about. And it is no mystery as to what sin is, all you have to do is examine yourself, according to the 10 commandments, and you can see your sin - and no matter how many, or how much your sins - the love of God which is ours in Christ in the forgiveness of sins is enough to wash them all away.
Which brings us to the one thing we need to learn: what is eternal life?
This is eternal life, that they know thee the only true God