Although Vasudeva had promised to hand over every child to Kamsa, this time he wanted to break his promise and hide the child somewhere. But because of the Lord's appearance in this surprising four-armed form, He would be impossible to hide

Expressions researched:
"Although Vasudeva had promised to hand over every child to Kaṁsa, this time he wanted to break his promise and hide the child somewhere. But because of the Lord's appearance in this surprising four-armed form, He would be impossible to hide"

Srimad-Bhagavatam

SB Canto 10.1 to 10.13

Devakī was thinking of hiding the Supreme Personality of Godhead and not handing Him over to Kaṁsa as she had all her previous children. Although Vasudeva had promised to hand over every child to Kaṁsa, this time he wanted to break his promise and hide the child somewhere. But because of the Lord's appearance in this surprising four-armed form, He would be impossible to hide.

SB 10.3.30, Translation and Purport

O my Lord, You are the all-pervading Supreme Personality of Godhead, and Your transcendental four-armed form, holding conchshell, disc, club and lotus, is unnatural for this world. Please withdraw this form [and become just like a natural human child so that I may try to hide You somewhere].

Devakī was thinking of hiding the Supreme Personality of Godhead and not handing Him over to Kaṁsa as she had all her previous children. Although Vasudeva had promised to hand over every child to Kaṁsa, this time he wanted to break his promise and hide the child somewhere. But because of the Lord's appearance in this surprising four-armed form, He would be impossible to hide.