• References to the Trinity in the Bible
  Though not a complete list, here is some other Scripture that shows God is one, in Trinity:

  • "Hear, O Israel! The LORD is our God, the LORD is one!" (Deut. 6:4)
  • "I am the LORD, and there is no other; Besides Me there is no God." (Isa. 45:5)
  • There is no God but one. (1Cor. 8:4)
  • "Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit." (Matt. 28:19)
  • Jesus said: "I and the Father are one." (John 10:30)
  • "He who has seen Me has seen the Father." (John 14:9)
  • "He who beholds Me beholds the One who sent Me." (John 12:45)
  • If anyone does not have the Spirit of Christ, he does not belong to Him. (Rom. 8:9)
  • And the angel answered and said to her [Mary], "The Holy Spirit will come upon you, and the power of the Most High will overshadow you; and for that reason the holy offspring shall be called the Son of God." (Luke 1:35)
  • [Jesus speaking to His disciples] "And I will ask the Father, and He will give you another Helper, that He may be with you forever; the Spirit of truth, whom the world cannot receive, because it does not behold Him or know Him, but you know Him because He abides with you, and will be in you." ... "If anyone loves Me, he will keep My word; and My Father will love him, and We will come to him, and make Our abode with him." (John 14:16-17, 23)"

  
  A website, Sunday School Network, sites these verses from the Bible in a Trinity activity:
  
  John 1:1-2, 14  In the beginning was the Word, and the Word was with God, and the Word was God. He was with God in the beginning. Through him all things were made; without him nothing was made that has been made...The Word became flesh and made his dwelling among us. 
  Matthew 1:23"The virgin will be with child and will give birth to a son, and they will call him Immanuel" --which means, "God with us."  
  John 14:9,11"...Anyone who has seen me (Jesus) has seen the Father...Believe me when I say that I am in the Father and the Father is in me..."
  John 14:25-26"All this I have spoken while still with you. But the Counselor, the Holy Spirit, whom the Father will send in my name will teach you all things and will remind you of everything I have said to you."
  Ephesians 1:13-14 "And you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God's possession--to the praise of his glory.
  Colossians 1:15-20"He is the image of the invisible God, the firstborn over all creation. For by him all things were created: things in heaven and on earth, visible and invisible, whether thrones or powers or rulers or authorities; all things were created by him and for him. He is before all things, and in him all things hold together. And he is the head of the body, the church; he is the beginning and the firstborn from among the dead, so that in everything he might have the supremacy. For God was pleased to have all his fullness dwell in him, and through him to reconcile to himself all things, whether things on earth or things in heaven, by making peace through his blood, shed on the cross."