Joshua 18

Then Joshua said to the children of Israel: “How long will you neglect to go and possess the land which the Lord God of your fathers has given you? v.3

Read chapter 18
They're wading in this water of life yet are afraid or just content getting their feet wet.  The Israelites are in the promised land yet are slack in possessing it.  Perhaps it's the fear of them being nomads their whole life wondering in the wilderness that they're not ready to build and possess a stable home and life.  Perhaps they were tired from all the battles.  They seem to need the whole survey of the land, the whole picture, an exact measuring, before they could make a decision.  Of course they wouldn't have just taken land without the lot cast by the priest as an answer from the Lord, but slackness in asking and laying hold of what God said He was giving to them.  Joshua hasn't yet laid hold of his inheritance as he first will make sure everyone else has theirs.  Joshua stirs the last seven tribes to do their part so that he can do his part for them.  Oh how we all need someone like Joshua in our lives to call us out and challenge us not to be slack in taking God's promises, but to take them confidently.
When do you become slack in possessing what God has promised?  Are you afraid of the norm you've always known?  Are you exhausted and want what appears easier?  Are you needed to get the exact details before you make a decision?