God is one, but in three persons. He was there before time, exists outside of space and time, and will continue to do so unto the ages of ages. One person is the Father, the creator of the Earth, who is recognized as God by all three Abrahamaic religions. The second person is the Son, a historical figure named Jesus, son of Joseph, who is the Messiah, or Christ, and lived and died for the salvation of a sinful mankind. While on this earth, he was mortal in all respects except the sin of all mortals, and so had no predilection to do any wrong. While the person, Jesus, lived from 4 BC to 33 AD, he has existed in spirit along with the Father and the Holy Spirit for all time, since they are one in the same God, and are thus inseparable in essence. The third Person is the Holy Sptrit. He is the revealer of the Word of God, and is the inspiration for the writers of Scripture, the Apostles, and countless pious and faithful men and women.
Together, they are the penultimate presence, and transcend all human concepts, such as space, time and the laws of nature. He is omnipresent, omnipotent, and omnibenvolent. He is a just God, and a loving God. He loves all humankind unconditionally, despite our blatant failings, like an old craftsman who is attached to his creation, in spite of its flaws. His motives are unintelligible to mortals, who can only speculate and make close guesses.