'Offspring' in the Bible

If you have knowledge that he is upright, it is clear to you that everyone who does righteousness is his offspring.

Everyone who believes [with a deep, abiding trust in the fact] that Jesus is the Christ (the Messiah, the Anointed) is born of God [that is, reborn from above—spiritually transformed, renewed, and set apart for His purpose], and everyone who loves the Father also loves the child born of Him.