No one can serve two masters

Scripture references

Matthew 6:20–24 (ASV)

20but lay up for yourselves treasures in heaven, where neither moth nor rust doth consume, and where thieves do not break through nor steal: 21for where thy treasure is, there will thy heart be also. 22The lamp of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light. 23But if thine eye be evil, thy whole body shall be full of darkness. If therefore the light that is in thee be darkness, how great is the darkness! 24No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to one, and despise the other. Ye cannot serve ...

Luke 12:22–34 (ASV)

22And he said unto his disciples, Therefore I say unto you, Be not anxious for your life, what ye shall eat; nor yet for your body, what ye shall put on. 23For the life is more than the food, and the body than the raiment. 24Consider the ravens, that they sow not, neither reap; which have no store-chamber nor barn; and God feedeth them: of how much more value are ye than the birds! 25And which of you by being anxious can add a cubit unto the measure of his life? 26If then ye are not a...

Stories

David decides to leave behind his evil ways and follow Jesus completely; forsaking the "Jesus" he knew for the one true Jesus. David's conversion became the first of many in the Triad gang to which he belonged.
As Ned Wright preached and prayed for an opium-smoker at a pub, the owner too alongside his wife become convicted of their sin and confess Jesus as Lord. The next day, the pub owner puts his pub out for sale saying, he could not serve two masters, and so he meant to quit the business altogether.
A teenage boy learns that he can either be Christian or Hindu but never both. He then makes the decision to choose Christianity alone. The result for him was overwhelming joy!