"Yahweh (Yhwh) is our God; Yahweh is one" Deuteronomy 6:4 (WEB).

"You alone, whose name is Yahweh (Yhwh), Are the Most High over all the earth." Psalm 83:18 (WEB).

"This (means) is (everlasting) eternal life, that they should know (take in knowledge of) you, the only true God, and him whom you sent, Jesus Christ." John 17:3 (WEB).

"God is (only) one."  Galatians 3:20 (WEB).

"(Stephen), being full of the Holy Spirit, looked up steadfastly into heaven, and saw the glory of God, and Jesus standing on the right hand of God, and said, "Behold, I see the heavens opened, and the Son of Man standing on the right hand of God."Acts 7:55, 56 (WEB).