That ye be not sluggish (ina mh nwqroi genhsqe). Negative final clause with second aorist middle subjunctive of ginomai, "that ye become not sluggish (or dull of hearing)" as some already were ( Hebrews 5:11 ). Imitators (mimhtai). See 1 Thessalonians 1:6 ; 1 Thessalonians 2:14 for this word (our "mimic" in good sense). The writer wishes to hold and develop these sluggards through those who inherit the promises (see 1 Thessalonians 10:19-12:3 ), one of his great appeals later in ch. Hebrews 11:1 ff. full of examples of "faith and long-suffering."