1: μέγας
(Strong's #3173 — Adjective — megas — meg'-as )

for which see GREAT , No. 1, is translated "the greatest," in Acts 8:10; Hebrews 8:11 . The whole phrase, lit., "from small to great," is equivalent to the Eng. idiom "one and all." It is used in the Sept., e.g., in 1—Samuel 5:9 : "God smote the people of Gath from the least to the greatest," ("both small and great"). So 1—Samuel 30:19; 2—Chronicles 34:30 , etc. See GREAT.

2: μείζων
(Strong's #3187 — Adjective — meizon — mide'-zone )

the comparative of No. 1, is sometimes translated "greatest;" besides the two cases given under GREATER, No. 1, where the RV corrects the AV, "greatest" to "greater" (Matthew 13:32; Luke 22:26 ), the RV itself has "greatest" for this comparative in the following, and relegates "greater" to the margin, Matthew 18:1,4; 23:11; Mark 9:34; Luke 9:46; 22:24 . See GREATER , MORE.