note: "house" and "child"
Contrary to tradition, the Magi did not visit Jesus at the manger on the night of his birth as did the shepherds. They came some months later and visited him as a "child" in his "house."
A lot can be learned about Who we should worship and kneel to in this one verse.
Notice the order. They saw the Child first.
Notice Who they fell down and worshipped before. The Child.
Notice Who received the gifts. The Child.