Sand - Vine's Expository Dictionary of New Testament Words
Sand[ 1,,G285, ammos ]
sand" or "sandy ground," describes
(a) an insecure foundation, Matthew 7:26;
(b) numberlessness, vastness, Romans 9:27; Hebrews 11:12; Revelation 20:8;
(c) symbolically in Revelation 13:1, RV, the position taken up by the Dragon (not, as in the AV, by John), in view of the rising of the Beast out of the sea (emblematic of the restless condition of nations; See SEA).