Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him. By this we know that we love the children of God, when we love God, and keep his commandments. For this is the love of God, that we keep his commandments: and his commandments are not grievous. ~ 1 John 5:1-3 KJV

Everyone who believes (adheres to, trusts, and relies on the fact) that Jesus is the Christ (the Messiah) is a born-again child of God; and everyone who loves the Father also loves the one born of Him (His offspring). By this we come to know (recognize and understand) that we love the children of God: when we love God and obey His commands (orders, charges)–[when we keep His ordinances and are mindful of His precepts and His teaching]. For the [true] love of God is this: that we do His commands [keep His ordinances and are mindful of His precepts and teaching]. And these orders of His are not irksome (burdensome, oppressive, or grievous). ~ 1 John 5:1-3 AMP