The cross is probably the most well-known symbol of Christianity today. Recently, there have been many attacks on this symbol: claims it was pagan, claims it wasn't used until Constantine, etc. But clearly, we see in the New Testament that the cross was something spoken of as a symbol of God's power. What are we to do? In this teaching, we will explore the first-century meaning of crucifixion. We will look at its usage before Yeshua, as well as how it was viewed by believers in Yeshua after the events of Passover.
For the word of the cross is folly to those who are perishing, but to us who are being saved it is the power of God...For Jews demand signs and Greeks seek wisdom, but we preach Christ crucified, a stumbling block to Jews and folly to Gentiles, but to those who are called, both Jews and Greeks, Christ the power of God and the wisdom of God.
If anyone is interested, I found a well-referenced article on the most probable shape of the cross used to crucify Yeshua. http://coldcasechristianity.com/2014/what-was-the-shape-of-jesus-cross/