Mattithyahu (Matthew) 6:6-7, 24

But you, when you pray, go into your room, and having shut your door, pray to your Father who is in the secret place. And your Father who sees in secret shall reward you openly. “And when praying, do not keep on babbling like the nations. For they think that they shall be heard for their many words.

No one is able to serve two masters, for either he shall hate the one and love the other, or else he shall cleave to the one and despise the other. You are not able to serve Elohim and mammon.