The deer and the squirrel represent ways that God cares for us. He enables us to work and save for the future, and He meets our need when resources are scarce. As the wisdom literature teaches, God gives us seasons of plenty so that we can prepare for seasons of need (Prov. 12:11). And as Psalm 23 says, the Lord leads us through perilous places to pleasant pastures.
Another way that God provides is by instructing those with plenty to share with those in need (Deut. 24:19). So when it comes to provision, the message of the Bible is this: Work while we can, save what we can, share what we can, and trust God to meet our needs.