'Well founded' in the Bible

My hope for you is well founded; because I know that just as you, brothers, are sharers of my sufferings, so you will be sharers of my comfort too.

But we are not, for we through the Spirit are eagerly waiting by faith for a hope of righteousness (a hope well founded);

Now may our Lord Jesus Christ Himself and God our Father, who has loved us and given us everlasting comfort and encouragement and the good [well-founded] hope [of salvation] by His grace,