Ps 118:22-23, Mt 21:42-44, Acts 4:11-12, Rom 9:30-33, 1 Pt 2:4-8
In the Old Testament, God said that He would take away the sins of the earth through a single stone. (Zec 3:9, Psalm 118:22)
Zec 3:9 For behold the stone that I have laid before Joshua; upon one stone shall be seven eyes: behold, I will engrave the graving thereof, saith the Lord of hosts, and I will remove the iniquity of that land in one day.
Psalm 118:22 The stone which the builders refused is become the head stone of the corner.
Jesus said that the stone that the builders rejected, as prophesied in the Old Testament, would judge people. (Mt 21:42-44)
Mt 21:42 Jesus saith unto them, Did ye never read in the scriptures, The stone which the builders rejected, the same is become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes? 43 Therefore say I unto you, The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof. 44 And whosoever shall fall on this stone shall be broken: but on whomsoever it shall fall, it will grind him to powder.
Jesus is the stone rejected by the builders prophesied in the Old Testament. Only through Jesus can we be saved. (Acts 4:11-12, Romans 9:30-33, 1 Peter 2:4-8)
Acts 4:11 This is the stone which was set at nought of you builders, which is become the head of the corner. 12 Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.
Romans 9:30 What shall we say then? That the Gentiles, which followed not after righteousness, have attained to righteousness, even the righteousness which is of faith. 31 But Israel, which followed after the law of righteousness, hath not attained to the law of righteousness. 32 Wherefore? Because they sought it not by faith, but as it were by the works of the law. For they stumbled at that stumblingstone; 33 As it is written, Behold, I lay in Sion a stumblingstone and rock of offence: and whosoever believeth on him shall not be ashamed.
1 Peter 2:4 To whom coming, as unto a living stone, disallowed indeed of men, but chosen of God, and precious, 5 Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ. 6 Wherefore also it is contained in the scripture, Behold, I lay in Sion a chief corner stone, elect, precious: and he that believeth on him shall not be confounded. 7 Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner, 8 And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were appointed.