'Readiness' in the Bible

“Tell the people: Purify yourselves in readiness for tomorrow, and you will eat meat because you cried before the Lord: ‘Who will feed us meat? We really had it good in Egypt.’ The Lord will give you meat and you will eat.

but we will maintain ourselves in armed readiness and go before the Israelites until whenever we have brought them to their place. Our descendants will be living in fortified towns as a protection against the inhabitants of the land.