"a sign, token or indication," is translated "token" in 2Th 3:17, of writing of the closing salutations, the Apostle using the pen himself instead of his amanuensis, his autograph attesting the authenticity of his Epistles. See MIRACLE, SIGN.
<2,,4953, sussemon>
"a fixed sign or signal, agreed upon with others" (sun, "with"), is used in Mar 14:44, "a token." In the Sept., Jdg 20:38, Jdg 20:40, Isa 5:26, Isa 49:22, Isa 62:10.
<3,,1730, endeigma>
"a plain token, a proof" (akin to endeiknumi, "to point out, prove") is used in 2Th 1:5 "a manifest token," said of the patient endurance and faith of the persecuted saints at Thessalonica, affording proof to themselves of their new life, and a guarantee of the vindication by God of both Himself and them (see No. 4, Note).
<4,,1732, endeixis>
"a pointing out, showing forth," is rendered "evident token" in Phi 1:28. See DECLARE, B, PROOF. Cp. apodeixis, 1Co 2:4.
Note: No. 4 refers to the act or process of proving, No. 3 to the thing proved. While the two passges, Phi 1:28 and 2Th 1:5, contain similar ideas, endeigma indicates the "token" as acknowledged by those referred to; endeixis points more especially to the inherent veracity of the "token."