One of the teachers of the law came and heard them debating. Noticing that Jesus had given them a good answer, he asked him, "Of all the commandments, which is the most important?" "The most important one," answered Jesus, "is this: 'Hear, O Israel, the Lord our God, the Lord is One." "Well said, teacher," the man replied. "You are right in saying that God is One and there is no other but Him." (Mark, 12:28-32)
... But God is One. (Galatians, 3:20)
There are different kinds of working, but the same God works all of them in all men. (1 Corinthians, 12:6)
For there is one God... (1 Timothy, 2:5)
Jesus said to him, "... Worship the Lord your God, and serve Him only." (Matthew, 4:10)
You believe that there is one God. Good! Even the demons believe that—and shudder. (James, 2:19)
Now to the King eternal, immortal, invisible, the only God, be honor and glory for ever and ever. (1 Timothy, 1:17)
How can you believe if you accept praise from one another, yet make no effort to obtain the praise that comes from the only God? (John, 5:44)
... You have one Lord... (Matthew, 23:9)
As Jesus started on his way, a man ran up to him and fell on his knees before him. "Good teacher," he asked, "What must I do to inherit eternal life?" Jesus answered, "No one is good—except God alone." (Mark 10:17-18)
... We know that an idol is nothing at all in the world and that there is no god but One... for us there is but one God, the God, from Whom all things came and for Whom we live... (1 Corinthians, 8:4-6)
"Why do you ask me about what is good?" Jesus replied. "There is only One Who is good. If you want to enter life [paradise], obey the commandments of [God]." (Matthew, 19:17)
For even if there are so-called gods [surely God is beyond that], whether in heaven or on earth yet for us there is one God, the God, for Whom all things came and for whom we live. (1 Corinthians 8:5-6)
... One Lord, one faith... one God of all, Who is over all and through all and in all. (Ephesians, 4:5-6)
For every house is built by someone, but God is the builder of everything. (Hebrews, 3:4)
Now all glory to God... (Jude, 1:24)