“Immediately,
The father
Of the child
Cried out.
‘I believe!
Help my unbelief!’”
εὐθὺς κράξας ὁ πατὴρ τοῦ παιδίου ἔλεγεν Πιστεύω· βοήθει μου τῇ ἀπιστίᾳ.
This is unique to Mark. Immediately (εὐθὺς), the father of the child cried out (κράξας ὁ πατὴρ τοῦ παιδίου ἔλεγεν) that he believed (Πιστεύω), in the first person singular. However, he wanted help with his unbelief (βοήθει μου τῇ ἀπιστίᾳ). This was a strong statement of belief that also recognized unbelief at the same time.