Forty - Vine's Expository Dictionary of New Testament Words
Forty
[ 1,,G5062, tessarakonta ]is used in circumstances in Scripture which indicate the number as suggesting probation, separation or judgment, e.g., Matthew 4:2; Acts 1:3; Hebrews 3:9, Hebrews 3:17. Note: Tessarakontaetes, forty years" (etos, "a year"), is found in Acts 7:23; Acts 13:18.