The meaning of “ἀλλά”

“Yet hath he not root in himself, but dureth for a while: for when tribulation or persecution ariseth because of the word, by and by he is offended.”

“Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.”

“Yea, and if I be offered upon the sacrifice and service of your faith, I joy, and rejoice with you all.”

“But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour.”

“But let it be the hidden man of the heart, in that which is not corruptible, even the ornament of a meek and quiet spirit, which is in the sight of God of great price.”