Paul, in his epistles, seems to have believed that the resurrection and the ascension to heaven were one and the same event - in other words, that Jesus was resurrected spiritually and that there was no physical resurrection. Matthew and Mark do not mention an ascension to heaven, and Matthew's account of the appearance of the risen Jesus to the disciples seems to rule out the ascension in Acts as well as that in Luke. On these accounts we can not say that Jesus waited forty days, or even that he ascended bodily to heaven at all.
To finish off unfinished business he could not see to during 33 years sojourn in physical form.
Holy Spirit to come upon them on the day of Pentecost.
They replaced Judas, the traitor with a vote and then waited in an upper room for the Holy Spirit to come as Jesus promised. There is no record of any fear in them as when Jesus was crucified, (John 20.19)
They waited before invading France
You waited for a break in traffic. When another driver cut in front of you, you applied your car brakes, and again waited for a break in traffic before going through the intersection.
it waited for someone
They waited for the flood surge to abate before attempting a rescue.
No, she waited until marriage.
seven months
Waited
I waited for the banana to ripen before eating it.
Before declaring a cause of death, the officers waited for the autopsy results.
Yes, seeing as he was having sex before he was married, if he didn't believe in it he would have waited.