Deuteronomy 6:4-5 KJV
4 Hear, O Israel: The LORD our God is one LORD: 5 And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.
There is one God. There is only one Creator. There is only one.
Some people will say that it doesn't matter who someone serves as long as they serve an higher power, but I'm here to tell you it does matter because there is only one God.
God tells us that there really is only one commandment as well. If we remember this one, great commandment, then we will follow the rest of His commands out of love.
We are to love God with all we have. All our heart. All our soul. All our might.
God gave His all for us. We must give our all for Him.
We cannot just love Him a little. We can't just love Him 1/2 way. We must give Him all our love. If you do, you will study His Word and seek to know Him better. You will strive to have a relationship with Him.