For us, the "promised land" is our eternal home, the new creation (eg 1 Peter 1:4). Keeping our hopes fixed there guards us from some common errors:
- we're not working for "success" here, as if our church were what mattered; we're working for God's kingdom.
- we're not to expect perfection here; we have joy as we look forward to what we will have. This life is to make us more godly (through hardships, usually); the life to come will be "rest".
- we're not to give up. If we have false expectations, we'll lose hope.
- we're not to look for glory now. The pattern of the Christian life is: the cross now, glory to follow. We haven't yet got our promised land to enjoy, but we're working towards it.