"Of the children of Gad, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;" (Numbers 1: 24)
Gad means "troop" or "army".
Every son born to Jacob-Israel carries a picture of our Lord Jesus.
He is our captain:
"For it became him, for whom are all things, and by whom are all things, in bringing many sons unto glory, to make the captain of their salvation perfect through sufferings." (Hebrews 2: 10)
He is our rearguard:
"Then shall thy light break forth as the morning, and thine health shall spring forth speedily: and thy righteousness shall go before thee; the glory of the LORD shall be thy rereward." (Isaiah 58: 8)
He is our watchman:
"Ye shall not fear them: for the LORD your God he shall fight for you." (Deuteronomy 3: 22)
When we see the word "LORD", let us recognize that we see Jesus there:
"Jesus Christ the same yesterday, and to day, and for ever." (Hebrews 13: 8)
And above all:
"Nay, in all these things we are more than conquerors through him that loved us." (Romans 8: 37)
"Now thanks be unto God, which always causeth us to triumph in Christ, and maketh manifest the savour of his knowledge by us in every place." (2 Corinthians 2: 14)
And above all:
"And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death." (Revelation 12: 11)