"Hear O Israel, THE LORD our GOD is ONE LORD." Deuteronomy 6:4

"Cry out and shout, thou inhabitant of Zion, for great is THE HOLY ONE of Israel." Isaiah 16:6

"Thus saith THE LORD THE KING of Israel, and HIS Redeemer THE LORD of HOSTS: I AM The first and I AM the last; and beside ME there is no GOD." Isaiah 44: 6

"Look unto ME, and be ye saved all the ends of the earth, for I AM GOD, and there is none else." Isaiah 45:22

"I AM THE LORD, and there is none else beside ME." Isaiah 45:5

"Remember this... I AM GOD, and there is none else; I AM GOD; and there is none like ME. " Isaiah 46:8a, 9c

"And THE LORD shall be King over all the earth; in that day shall there be ONE LORD and HIS NAME ONE." Zechariah 14: 9

"And ye shall know that I AM in the midst of Israel, and that I AM THE LORD your GOD, and none else; and MY people shall never be ashamed." Joel 2: 27 

"Have we not all ONE FATHER? Hath not ONE GOD created us?" Malachi 2:10a

JESUS said,'I and MY FATHER are ONE." John 10:30

"And JESUS answered him 'the first of all the commandments is , 'hear O Israel, THE LORD our GOD is ONE LORD." Mark 12:29

"And the scribe said unto HIM, well, MASTER, thou hast said the truth; for there is ONE GOD; and there is none other than HE." Mark 12: 32

"For there is ONE GOD, and ONE mediator between GOD and men, the man Christ JESUS." I Timothy 2: 5

"GOD is ONE". Galatians 3: 20c

"Endeavouring to keep the unity of THE SPIRIT in the bond of peace. There is ONE body and ONE Spirit, even as ye are called in ONE hope of your calling; ONE LORD, ONE faith, ONE baptism, ONE GOD and FATHER of all, WHO is above all, and through all, and in you all. " Ephesians 4: 3-6

There are more scriptures on this topic and I will add them later. Stay tuned.