The fool hath said in his heart, There is no GOD. Corrupt are they, and have done abominable iniquity: there is none that doeth good. GOD looked down from heaven upon the children of men, to see if there were any that did understand, that did seek GOD. Every one of them is gone back: they are altogether become filthy; there is none that doeth good, no, not one. Have the workers of iniquity no knowledge? who eat up My people as they eat bread: they have not called upon GOD. There were they in great fear, where no fear was: for GOD hath scattered the bones of him that encampeth against Thee: Thou hast put them to shame, because GOD hath despised them. Oh that the salvation of Israel were come out of Zion! When GOD bringeth back the captivity of His people, Jacob shall rejoice, and Israel shall be glad. (Psalms 53:1-6)
Even worse are those that are His, and at least claiming to be, and yet they deny the Lord that bought them. The only thing worse than a sheep in wolf's clothing, is a shepherd in wolves clothing, for the sheep follow him to destruction.
GOD always has a remnant though, that are true to Him, and keep His Word and do His work, not because we have to, but because we want to. We preach Christ crucified and raised again, not only because it is the only salvation from our sIn, but because of what GOD has done in our life through the Cross and through the Blood. The One who created us, has redeemed us out of every nation, tongue, and tribe and will present us to GOD the Father as His bride, holy and spotless because of His finished work to pay our sIn debt.
Those that don't know Him are unclean, separated from GOD because of their sIn, and unless you repent, surrender to Him on His terms, you shall likewise perish. But, GOD is not willing that any should perish. Jesus loves you and wants to establish a covenant relationship with you that is real and personal. He commands you to be born again and wants you to receive by faith in Him a brand new life of discipleship and fellowship with Him that is abundant and everlasting. Rejoice with Israel, and praise with Jacob the Salvation that comes from Jesus Christ.