When I was younger, there was a rule in our house that you couldn't invite yourself over to a friends house because it was very rude. I thought I was pretty clever by telling Leif have his mom invite me over so my mom would say yes.
I still feel like it's pretty rude to invite myself places. In fact, sometimes I even feel rude accepting invitations if I feel I was invited out of obligation. Yet, there are some people and some places that I am so comfortable, I don't always need an invitation to pop in or hang out; I'll just do it. However, I still think that's intrusive... I just do it anyways I guess, 'cuz that's how much I love those people!
So, when dealing with anyone who is polite, non-invasive, and cares enough to respect your space, if you want to spend time with them you're going to need to invite them. The invitation is necessary for quality time together.
Jesus is pretty polite, definitely non-invasive, and He will never impose Himself on anyone unless they personally invite Him. This is why I love to start off any worship set, concert, or program I do with an invitation to the Holy Spirit (basically the omni-present version of Jesus) to be present with me, and everyone else there.
Azriel shares this sentiment with me, so here is a variation of the concert-opening medley that we did in FL.
Invite Him in!