No doubt God is merciful, the Bible definitely teaches that, but why does He show mercy, and how can we be sure we have received it?

This is where the Bible is so valuable to us.  I am so glad that you believe the Bible is God's message to us, because John, a dear friend and disciple of Jesus wrote in a letter to the church these wonderful, assuring words:
"My purpose in writing is simply this: that you who believe in God's Son will know beyond the shadow of a doubt that you have eternal life, the reality and not the illusion."  1 John 5:13

So what is it that John wrote that could possibly give such an assurance? The key is the phrase "you who believe in God's Son."

Click here to see how that assurance comes