Before we can worship God we have to recognize that there is but One God and that God is the God of the Holy Bible. He is the God of all creation: the heavens: the stars, the moons, the planets, the suns, the galaxies, the black holes, the comets, the milky way, the asteroids and every other thing up in the universes. God is the God of the earth and everything in it, on it, under it, above it; including people.
Genesis 1 and 2 tell us in some detail exactly how our planet came about and where we, as people, originate. And why.
Recognizing that God Is, we also come to the logical and reasonable conclusion that there is only One God, as His Word says.
Exodus 34:14
For you must not worship any other god, for the LORD, whose name is Jealous, is a jealous God.
Deuteronomy 4:39
Know therefore this day and take to heart that the LORD is God in heaven above and on the earth below; there is no other.
1 Corinthians 8:6
But to us there is but one God, the Father, of whom are all things, and we in Him; and one Lord Jesus Christ, by whom are all things, and we by Him.
Ephesians 4:4-6
There is one body and one Spirit, just as you were called to one hope when you were called; One Lord, one faith, one baptism, one God and Father of all, who is over all and through all and in all.
In addition to these listed there are so many more Bible passages declaring not only that there is One God but WHO GOD IS. One must merely set aside some time each day to read The Word of God. And when merely reading is no longer enough, we will find ourselves seeking God's Wisdom for understanding what we're reading, digging deeper into His Word to find nuggets of wisdom to apply to our lives.
Plus, thoughtful prayer times must be initiated. It is impossible to know God deeper without knowing what His voice sounds like in your heart.