TSK · Mark 12:29

Now, Israel, what does Yahweh your God require of you, but to fear Yahweh your God, to walk in all his ways, and to love him, and to serve Yahweh your God with all your heart and with all your soul,

My son, give me your heart; and let your eyes keep in my ways.

Call no man on the earth your father, for one is your Father, he who is in heaven.

He answered, "You shall love the Lord your God with all your heart, with all your soul, with all your strength, and with all your mind; and your neighbor as yourself."

Therefore concerning the eating of things sacrificed to idols, we know that no idol is anything in the world, and that there is no other God but one.

but the goal of this command is love, out of a pure heart and a good conscience and sincere faith;

You believe that God is one. You do well. The demons also believe, and shudder.