The New Testament Greek Lexicon
| Strong's Number: 5628||Tense, Voice and Mood|
| ||Second Aorist
The "second aorist" tense is identical in meaning and translation to the normal or "first" aorist tense. The only difference is in the form of spelling the words in Greek, and there is no effect upon English translation.
The imperative mood corresponds to the English imperative, and expresses a command to the hearer to perform a certain action by the order and authority of the one commanding. Thus, Jesus' phrase, "Repent ye, and believe the gospel" (Mk.1:15) is not at all an "invitation," but an absolute command requiring full obedience on the part of all hearers.
Thayer and Smith. "Greek Lexicon entry for ". "The New Testament Greek Lexicon".