G5794 - Strong's Greek Lexicon Number

Strong's:

Mood-Imperative

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" Mr 1:15
is not at all an "invitation, " but an absolute command
requiring full obedience on the part of all hearers.